Apparatus for supporting window-sashes and the like.



J. B. MURPHY. APPARATUS FOR SUPPORTING WINDOW SASHES AND THE LIKE. APPLICATION FILED maze, 1912.

1,076,053. Patented Oct. 21, 1913.

COLUMBIA PLANOGRAPH 60.,wAsmNOTON. D. c

JOHN BAPTIST MURPHY, OF CORK, IRELAND.

APPARATUS ron surroa'rrnewrlvnow-sesnns AND :rHr': LIKE.

Specification of Letters Patent.

Patented Oct. 21,1913.

Application filed February 26, 1912. Serial No. 678,998.

To (ZZZ whom it may concern y Be it known that I, JOHN Barrrs'r MUR- rrrr, of Cork, in the county of Cork, Ireland,

have invented certain new and useful Improvements in Apparatus for Supporting Window-Sashes and the like, Specially Suitable for Windows in Doors of Railway-Carriages, of which the following is a specificatlon.

This invention relates to apparatus for supporting window sashes and the like, specially suitable for windows in doors of railway carriages, and has reference to mechanism of the kind wherein a nut cooperating with a screw is employed.

In order that my invention may be readily understood and carried into practice reference is hereby made to the accompanying sheet of illustrative drawings wherein- Figure 1 is a front elevational view illustrating a simple form of my invention applied in the case of a sliding window in a railway carriage door. Figs. 2 and 3 show in elevation and section respectively a modification of the construction. Fig. 1 is a detailed view of a modified form of the friction device. Fig. 5 is an elevationthereof.

Referring to these drawings the numeral 1 designates the frame of a railway carriage door and 2 designates a screw of the Archimedean type rotatably mounted in bearings 3 carried by the door frame.

The numeral at designates springs which are provided to prevent the too free rotation of the screw 2.

The window sash 5 is provided with a nut 6 suitably connected to the said sash and this nut coiiperates with the screw 2 as will be readily understood.

In operation the window is raised or lowered to the desired position where it will remain until it is again adjusted, the springs 4 being so arranged as to prevent the mere weight of the window causing rotation of the screw 2. If however the window is pushed down or pulled up the resistance of the springs 4 is overcome and the screw rotates and permits the position of the window to be altered. In the drawings one screw is shown centrally arranged but it will be readily understood that if desired two or more similar screw and nut devices can be arranged, for instance, one on either side of the window. Similarly the screw illustrated is an Arohimedean screw of triangular section buta similar screw of square section may if desirable be employed. I

Inorder to compensate for wear and prevent backlash the nut 6 is constructed in two halves a detail of which is shown in Figs. 2 and 3, said nut is held firmly up-to the screw by means of springs such as 7 In Figs. 4 and 5 I have shown an arrangementwhich might be adopted where the screw rotates when the window is moved in one direction, (the nut remaining stationary), and the nut rotates when the window is moved in the other direction (the screw remaining stationary). According to this construction the nut 15 is connected to the shelf 16 of the bracket 17, and is prevented from moving away from the bracket by the nut 18 although it is free to revolve upon the screw 19 in one direction, the ratchet teeth 20 and pawl 21 however preventing rotation in the other direction. The screw 19 is capable of rotation in either direction but the spring 22 operates as a brake to retard the rotation. When the window is moved in the one direction the nut 15 cannot rotate by reason of the pawl 21 engaging the teeth 20 but the resistance of the spring 22 is overcome and the screw 19 Will rotate and permit the adjustment of the window. When the window is moved in the other direction the ratchet teeth 20 will slip past the pawl 21 and the nut will rotate, the screw remaining stationary under the influence of the spring 22. In other words the arrangement is such that the power required to cause the ratchet teeth 20 to overcome the resistance of the pawl 21 is considerably less than that required to overcome the resistance of the spring 22 so that although the screw 19 can rotate in both directions when the window is moved in one direction the nut rotates before sufiicient power has been exerted to move the screw and thus thescrew remains stationary. If desirable a ratchet like device can also be provided to prevent any possibility of the screw moving except in the required direction. I have described my invention as applied to sliding windows of a particular kind but I wish it to be understood that it can be applied to other types of sliding windows and to sliding shutters, doors, platforms or the like either in houses, ships, vehicles or other locations. Moreover the particular constructions shown and described are given by way of example only, and I reserve the right to modify these constructions Within the limits of my claims without departing from the spirit and scope of my invention.

What I claim and desire to secure by Letters Patent is l. A Window sash supporter comprising a member having helical guides, the ends of said member being rotatably mounted in a Window frame, a friction member carried by the Window sash, the said friction member adapted to operate on the member provided with the guides, and means carried by the friction member for retarding move ment of the sash.

2. A Window sash supporter comprising a member having helical guides having its ends rotatably mounted in a Window frame,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. r

a device carried by the window sash, and spring pressed members in the device for retarding the rotational movement of the member having helical guides.

3. A Window sash supporter comprising a member having helical guides having its ends rotatably mounted in a Window frame,

a hollow device carried by the Window sash, gripping members supported Within the member, and means for forcing the gripping members into engagement with the member having helical guides.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN BAPTIST MURPHY. Witnesses:

HERBERT K. CRUIKsHANK, GEORGE E. CHAMBERLIN.

Washington, D. G. 

